Cultivator



(No Model.)

:w. w. 8 PL M. MULLEN.

CULTIVATOR.

o. 427,888. Patented May 18, 1890.

WITNLS'SES.

/ ATTORSl-TYS.

UNITE STATES PATENT FFICE.

\VINFIELD \V. MULLEN AND FRANCIS M. MULLEN,.OF BUNKER HILL,

INDIANA. I

CU LTJVATO R.

SPECIFICATION forming part of Letters Patent No. 427,888, dated May 13, 1890.

' Application filed October 12, 1889. Serial No. 326,863. (No model).

T0 at whom it may concern.-

Be it known that we, WINFIELD WV. MUL- LEN and FRANCIS M. MULLEN, citizens of the United States, residing at Bunker Hill, in the county of Miami. and State of Indiana, have invented certain new and useful Improvements in Cultivators, of which the following is a specification.

Our invention consists in certain improvements in the details of construction of cultivators by which avery convenient, complete, and comparatively-inexpensive machine is provided, as will be hereinafter more fully set forth.

Referring to the accompanyingdrawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure 1 is aperspective View of a cultivator of our improved construction; Fig. 2, a top or plan View of the same; Fig. 3, a detail sectional View, on an enlarged scale, on the dotted line 3 3 in Fig. 2; and Fig. 4, a similar View showing a modified form.

In said drawings, the portions marked A represent the main frame of the device; B, side wings hinged thereto, and C the cultivator-teeth.

The main frame A preferably consists of two side pieces connected at their-front ends,

extending back at an angle, and secured. to-

gether by a cross-bar near their rear ends, as shown. The side wings B are hinged one to each of said pieces by means of curved or semicircular irons B, attached thereto with their curved sides projecting therefrom, and provided with a series of perforations Z), through one of which and a hole in the end of each wing a pin 17 extends. By means of the series of perforations said wings may be pivoted at any point desired, and a stop-pin b is inserted behind the pivot, on the outside of the wing, to limit the outward movement thereof, which movement may thus be regulated as desired. A spring B is secured be tween the main frame A and each wing, arranged to bear against the wings and force them outward,the tension of said springs being regulated by means of a bolt 17 which passes through an outwardly-curved end'of each behind the point where they rest against the side pieces of the main frame, and by which said wing may be drawn down closely against said main frame, thus increasing the force with whichits opposite end bears against the win g, as will bereadily understood.

The teeth O are spring-teeth, formed of a piece of flat spring metal bent substantially as shown, and are secured to the frame by means of a clamp consisting of a bolt 0, provided with an elongated slotted head c',which rests in a recess 0 in the top of a washer or clamping-j aw Ciwhich rests against thefram e, and through which said bolt passes. \Vith the form of tooth shown this bolt is inserted from and secures the teeth on the top of the frame; but, as will be readily understood, the tooth could be of such a form that the bolt might be inserted from the under side of the frame, and such a construction is shown in Fig. 4. By the form of the clamping arrangement the tooth is allowed to be adjusted very readily, as by simply loosening the nut on" the end of the bolt the tooth may be turned to presentits point to the soil at any angle desired or to any depth, the part of the tooth which passes through the head of the bolt being curved, and the sliding of it to different positions therein operating, as will be readily understood, to lift the point of the tooth or lower it, as may be desired. It is also convenient for the purpose of adjusting the tooth sidewise to the position desired, as the bolt may be turned to any angle on the frame. The form of the clamp is such as will hold the tooth very secure and rigid to position, but at the same time permit its ready and easy adjustment, as just described. By this arrangement a cultivator is provided which is very complete and convenient to operate by reason of the spring-mounted wings and the mechanism by which they are adjusted to the width desired, and the device forsecuring the spring-tooth in place, by which any form of spring-tooth may be secured ina manner which permits its easy adjustment.

Having thus fully described our said invention, what we claim as new, and desire to secure by Letters Patent, is

The combination, in a cultivator, of the main frame A, the curved hinge parts B ,with

a series of perforations therein, secured to the our hands and seals, at Indianapolis, Indiana, sides of said frame, the wings B, pivoted to this 27th day of September, A. D. 1889.

said parts 13, the adjustable stop-pins b the T T 1 I T springs 13*, interposed between said frame and N 5 said wings, the spring-teeth O, and the slotted l head-b0lt C and clip C for seeurin 51" said Vitnesses: teeth in place, substantially as set forth. C. BRADFORD,

I11 witness whereof we have hereunto set J. \VALSH. 

